Custom Font Sizing in Xcode 6 Size Classes not working properly with Custom Fonts

Question

Xcode 6 has a new feature where fonts and font sizes in UILabel, UITextField, and UIButton can be s

Answer 1

I am using Swift, XCode 6.4. So this is what I did

import Foundation
import UIKit

    @IBDesignable class ExUILabel: UILabel {

        @IBInspectable var fontName: String = "Default-Font" {
            didSet {
                self.font = UIFont(name: fontName, size:self.font.pointSize)
            }
        }

        override func layoutSubviews() {
            super.layoutSubviews()
            self.font = UIFont(name: fontName, size:self.font.pointSize)
        }
    }

1. Goto Designer -> Identity Inspector -> Set the class to ExUILabel

2. Then go to Attribute inspector in designer and set the font name.